NC0028916_Lab Certification_20100526

ATA
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
May 26, 2010
5350
Mr. Joseph Shields
Town of Troy WVVTP
315 N. Main Street
Troy, NC 27371
=` R-FR
MAY 2 8 201g
DWQ
Subject: North Carolina Wastewater/Groundwater Laboratory Certification (NC WW/GW LC)
Maintenance Inspection
Dear Mr. Shields:
Enclosed is a report for the inspection performed on March 31, 2010 by Ms. Tonja Springer. Where
finding(s) are cited in this report, a response is required. Within thirty days of receipt, please supply this
office with a written item for item description of how these finding(s) were corrected. If the findings)
cited in the enclosed report are not corrected, enforcement actions may be recommended. For
certification maintenance, your laboratory must continue to carry out the requirements set forth in 15A
NCAC 2H .0800.
Copies of the checklists completed during the inspection may be requested from this office. Thank you
for your cooperation during the inspection. If you wish to obtain an electronic copy of this report by
email or if you have questions or need additional information, please contact us at 919-733-3908.
Sincerely,
Dana Sterwhite
Certification Unit Supervisor
Laboratory Section
Enclosure
cc: Tonja Springer
Fayetteville Regional Office
DENR DWQ Laboratory Section NC Wastewater/Groundwater Laboratory Certification Branch
1623 Mail Service Center, Raleigh, North Carolina 27699-1623
Location: 4405 Reedy Creek Road. Raleigh, North Carolina 27607-6445
Phone: [phone] FAX: [phone]
Internet: www.dwglab.org
An Equal opportunity \ Affirmative Action Employer Customer Service: 1-877-623-6748 www.ncwaterquality.org
NorthCarolina
,Naturally

On -Site Inspection Report
LABORATORY NAME: Town of Troy WWTP
NPDES PERMIT #: NC0028916
MAILING ADDRESS: 315 N. Main Street
Troy, NC 27371
CERTIFICATE #: 5350
DATE OF INSPECTION: March 31, 2010
TYPE OF INSPECTION: Field Maintenance
AUDITOR(S): Tonja Springer
LOCAL PERSON(S) CONTACTED: Joseph Shields
I. INTRODUCTION:
This laboratory was inspected to verify its compliance with the requirements of 15A NCAC 2H .0800 for
the analysis of environmental samples.
II. GENERAL COMMENTS:
The lab was clean and well organized. A description of current field lab policies and technical
assistance documents for the analysis of the facility's currently certified parameters were provided at
the time of the inspection. The requirements associated with. Findings A and C are new since the last
inspection.
111. FINDINGS, REQUIREMENTS, COMMENTS AND RECOMMENDATIONS:
Total Residual Chlorine — Standard Methods, 18th Edition, 4500 CI G
Comment: The Town of Troy wastewater treatment facility utilizes a UV water treatment system. The
laboratory had been maintaining certification for total residual chlorine as a backup in case the plant, in
an emergency, had to switch to chlorine disinfection. Since the inspection, the laboratory has
submitted an amendment form to remove Total Residual Chlorine from their certificate attachment.
Meritech, Inc. will be the backup laboratory in case of an emergency.
Documentation
A. Finding: Error corrections are not performed properly.
Requirement: All documentation errors must be corrected by drawing a single line through the
error so that the original entry remains legible. Entries shall not be obliterated by erasures or
markings. Wite-Out®, correction tape or similar products designed to obliterate documentation
are not to be used. Write the correction adjacent to the error. The correction must be initialed
by the responsible individual and the date of change documented. All data and log entries must
be written in indelible ink. Pencil entries are not acceptable. Ref: North Carolina

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#5350 Town of Troy WWTP
Wastewater/Groundwater Laboratory Certification document, Quality Assurance Policies for
Field Laboratories.
B. Finding: Performance testing samples are not analyzed in the same manner as environmental
samples. The results are transferred directly to the reporting form to the vendor and not
documented on the benchsheet.
•
Requirement: The analysis of performance testing (PT) samples is designed to evaluate the
entire process used to routinely report environmental analytical results. Therefore, PT samples
mustbe analyzed in the same manner as environmental samples. Ref: North Carolina
Wastewater/Groundwater Laboratory Certification document, Quality Assurance Policies for
Field Laboratories.
Requirement: Data pertinent to each analysis must be maintained for five years. Ref: 15A
NCAC 02H .0805 (g) (1).
QH — Standard Methods, 18th Edition, 4500 H+ B
C. Finding: Preparation and/or purchase of standards, reagents and consumables are not being
documented in such a way as to provide traceability.
Requirement: All chemicals, reagents, standards and consumables used by the laboratory
must have the following information documented: Date Received, Date Opened (in use),
Vendor, Lot Number, and Expiration Date. A system (e.g., traceable identifiers) must be in
place that links standard/reagent preparation information to analytical batches in which the
solutions are used. Documentation of solution preparation must include the analyst's initials,
date of preparation, the volume or weight of standard(s) used, th-e solvent and final volume of
the solution. This information as well as the vendor, manufacturer, lot number, and expiration
date must be retained for chemicals, reagents, standards and consumables used for a period of
five years. Consumable materials such as pH buffers and lots of pre -made standards are
included in this requirement. Ref: North Carolina Wastewater/Groundwater Laboratory
Certification document, Quality Assurance Policies for Field Laboratories.
Comment: An example benchsheet was provided at the time of the inspection that includes
the space to document the buffer used in the calibration.
D. Finding: The proper units of measure (i.e., S.U.) are not being documented for pH.
Requirement: Data pertinent to each analysis must be maintained for five years. Certified
Data must consist of date collected, time collected, sample site, sample collector, and sample
analysis time. The field bench sheets must provide a space for the signature or initials of the
analyst, and proper units of measure for all analyses. Ref: 15A NCAC 02H .0805 (g) (1).
Dissolved Oxygen (DO) — Standard Methods, 18th Edition, 4500 0 G
Temperature — Standard Methods, 18th Edition, 2550 B
Comment: If samples are analyzed "in situ" (i.e., measured directly in ,the stream) a statement can be
documented at the bottom of the benchsheet as a footnote, to indicate the sample collection and
sample analysis times are the same and only one time would be recorded.

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#5350 Town of Troy WWTP
IV. PAPER TRAIL INVESTIGATION:
The paper trail consisted of comparing field testing records and contract lab reports to . Discharge
Monitoring Reports (DMRs) submitted to the North Carolina Division of Water Quality. Data were
reviewed for NPDES permit NC0028916 for September and October, 2009. No transcription errors were
detected. The facility appears to be doing a good job of accurately transcribing data.
V. CONCLUSIONS:
Correcting the above -cited findings will help this lab to produce quality data and meet certification
requirements. The inspector would like to thank the staff for its assistance during the inspection and
data review process. Please respond to all findings.
Report prepared by: Tonja Springer Date: April 26, 2010
Report reviewed by: Chet Whiting Date: May 17, 2010